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Finding the Fourth Proportional to 501,703.74, 692,351.64 and 286,848.30

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Solution

The fourth proportional to 501,703.74, 692,351.64 and 286,848.30 is: 395,850.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,703.74 : 692,351.64 = 286,848.30 : x
  2. Step 2: Convert to fraction form
    501,703.74/692,351.64 = 286,848.30/x
  3. Step 3: Cross multiply
    501,703.74x = 692,351.64 × 286,848.30
  4. Step 4: Simplify right side
    501,703.74x = 198,599,890,936.21
  5. Step 5: Solve for x
    x = 198,599,890,936.21/501,703.74
  6. Step 6: Final answer
    x = 395,850.93

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.